Gas fuel burner



Aug. 7, 1934. G. E. WHITE GAS FUEL BURNER Filed sept. s, 1951 li y;

Patented Aug. 7, 1934 Gas FUEL BURNER Gilbert E. white, cinickasha, oma.Application september s, 1931, serial No. 561,549

1 Claim.

The object of this invention is to provide an improved construction fora burner for use with gaseous fuel.

A further object of the invention is to provide an improved gas fuelburner so constructed and arranged as to cause the flames to spread outin a blanket over and close to the surface of the burner, therebycausing intense heat with a minimum of fuel consumption.

Still another object of the invention is to provide an improved gas fuelburner equipped with electric spark ignition means.

Another object of the invention is to provide an improved gas fuelburner which is of light weight, inexpensive to manufacture, and capablenof withstanding intense heat.

With these and other objects in view my invention vconsists in theconstruction, arrangement and combination of the various parts of mydevice, whereby the objects contemplated are attained, as hereinaftermore fully set forth, pointed out in my claim, and illustrated in theaccompanying drawing, in which:-

Figure l is a plan View illustrating a burner constructed in accordancewith my invention.

Figure 2 is a vertical, sectional elevation on the line 2-2 of Figure 1.

Figure 3 is a cross section on the line 3-3 of Figure 2.

Figure 4 is a detail section through one of the fuel openings in the topof the burner, illustrating the means for causing the flame to spreadout over the surface of the burner.

The burner is composed primarily of a hollow shell 10 preferably ofelongated form in plan view, and arranged to form an elliptical or ovalannulus.

The longer or parallel sides of the annulus are connected centrally bya'transverse bridge portion 12 which also is hollow and aifordscornmunication between the two passages formed on the opposite sides ofthe burner.

At the lower central part of the device, and more specifically below thebridge portion 12, is a downwardly opening boss or nipple 14 which isinternally threaded and adapted to receive a fitting such'as a reducingL 16. Communicating with the tting 16 is a fuel pipe 18, which in turnis connected with a valve 20 to which gaseous fuel may be supplied by apipe 22.

The upper surface of the shell 10 of the burner is substantially fiatand plane and is designated by the numeral 24.

The top wall of the burner shell 10 is formed with a plurality of fuelopenings extending therethrough and' opening to the at upper surface 24.The fuel openings are arranged in close proximity throughout the surfaceof the top wall and each of said openings preferably is intwo parts,namely a lower straight or cylindrical portion 26 and an uppercounter-sunk, tapering or funnel-shaped portion 28. The cylindricalportion 26 preferably occupies substantially onehalf the thickness ofthe metal and the flaring portion 28 occupies the remaining half and isof 05 course arranged with its greater diameter at the outer surface ofthe top wall of the burner.

The burner shell 10 is formed integrally of metal by the casting processand it preferably is made either of aluminum or aluminum alloy. In somerespects a suitable aluminum alloy would be preferable because it wouldtend4 to produce a harder and tougher casting capable of withstandinggreater heat than the pure aluminum.

The shell 10 is formed with a threaded socket 30 in which an insulatedconical extension core 32 is mounted. The extension corehas an electrode34 which extends laterally and has its point terminating in spacedrelation to the upper surface 24 of the burner adjacent one of the fuelopenings for the purpose of forming a spark gap. The extension core alsohas a terminal post 36 to which may be attached an electric conductorforming part of an ignition circuit. It is the function of the extensioncore and parts associated therewith to furnish means for igniting thefuel when proper contacts are made.

When gaseous fuel is supplied to the burner and is ignited, it burns inthe form of a relatively at blanket close to the upper surface 24 of theburner. This is caused by the peculiar formation of the fuel openings26-28, the action of which is shown by the lines 38 in Figure 4. Theenlarged or funnel-shaped portions 28 of the fuel openings permitexpansion of the gas before it escapes entirely from the openings, thuscausing the gas to begin spreading out before reaching the surface ofthe burner, and this spreading action is continued over the 100 surfaceof the plate for forming a solid blanket of flame close to the surface24.

Because of this method of burning of the gaseous fuel, a high degree ofheat is obtained with a minimum consumption of fuel because flames 105remaining close to the surface of the burner are not interfered with byaction of the air and more perfect combustion is secured.

Experiment has proven that the use of aluminum or a suitable aluminumalloy for the l.

burner is advantageous from the standpoint of 4securing the closeblanket of flame. This effect is secured to some extent, when the burneris made of aluminum or aluminum alloy, even though the fuel openings arecompletely cylindrical and the funnel-shaped portions 28 are omitted. Itis believed the spreading effect of the flame is induced in part by thenatural cohesion oi the Vparticles of gas with this particular type ofmetal or alloy.

However, I have found that the best results are obtained by forming thefuel openings as rst described and as shown in the drawing, and that theflaring or flmnel-shaped formation of the upper portions 28 of theopenings is of particular 'value in securing the close blanket of flameand consequently the best and most eiiicient results from the burner,especially when burning low or at a point less than fifty per centcapacity.

I claim as my invention:-

In a gas fuel burner, an elongated hollow shell of substantiallyelliptical annular formation, a hollow transverse bridge portioncentrally connecting the longer sides of the annulus and aiordingcommunication between the two passages at the sides of the shell, athreaded boss formed at the lower side of said bridge portion to receiveconnection of a fuel supply means, the upper surface of said shell beingsubstantially flat and being formed with a plurality of small fuelopenings communicating with the interi'or of the shell, said shell beingformed with a threaded socket, an insulated extension core mounted insaid Socket, and an electrode carried by said core and provided withmeans for connecting it to a source of current supply, said electrodehaving a terminal forming an approp'riate spark gap with the surface ofthe shell adjacent one of said fuel openings.

GILBERT E. WHITE.

